Tread for a footwear outsole



FIG. 1 is a first perspective view of my ornamental design for a tread for a footwear outsole;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the figure views depict unclaimed subject matter and environment in the form of a footwear midsole and upper. The broken lines and subject matter they depict form no part of the claimed design. 

CLAIM The ornamental design for the tread for a footwear outsole, as shown and described. 